.page-about {
  --about-node: 9px;
  --about-rule: 1px solid var(--line);
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 通用标题组 ---------- */
.page-about .kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.18em;
  color: var(--coral);
  margin: 0;
}

.page-about .headline {
  font-family: var(--font-sans);
  font-size: var(--fs-28);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0.35em 0 0;
  max-width: 26ch;
}

.page-about .lede {
  font-family: var(--font-serif);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mute);
  max-width: 40em;
  margin: 0.9em 0 0;
}

.page-about .section-head {
  max-width: 62ch;
}

@media (min-width: 900px) {
  .page-about .headline {
    font-size: var(--fs-44);
  }
  .page-about .lede {
    font-size: var(--fs-20);
  }
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(24px, 5vw, 52px) clamp(48px, 8vw, 96px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 78%;
  background: radial-gradient(58% 100% at 72% 0%, rgba(198, 242, 78, 0.16), transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  bottom: -1px;
  height: clamp(48px, 7vw, 92px);
  background: linear-gradient(180deg, rgba(31, 61, 51, 0), rgba(31, 61, 51, 0.62));
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(18px, 3vw, 32px);
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    gap: clamp(28px, 4.5vw, 64px);
    align-items: end;
  }
}

.page-about .about-hero h1 {
  font-family: var(--font-sans);
  font-size: var(--fs-44);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.12;
  margin: 0.35em 0 0;
  max-width: 20ch;
}

@media (min-width: 900px) {
  .page-about .about-hero h1 {
    font-size: var(--fs-72);
  }
}

.page-about .about-hero__panel {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.page-about .about-hero__panel-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.2vw, 24px);
  margin-top: clamp(14px, 2vw, 20px);
}

.page-about .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
}

.page-about .stat__label {
  display: block;
  margin-top: 0.55em;
  font-size: var(--fs-14);
  line-height: 1.55;
  color: var(--mute);
}

.page-about .about-routes {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding-bottom: 6px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-routes__link {
  flex: 0 0 auto;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--fs-14);
  color: var(--mute);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .about-routes__link:hover,
.page-about .about-routes__link:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  background: var(--glass);
  outline: none;
}

/* ---------- 业务范围 ---------- */
.page-about .about-clients {
  list-style: none;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-about .about-clients {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .about-clients {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-clients__item {
  background: var(--ink);
  padding: clamp(18px, 2.4vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.28s var(--ease);
}

.page-about .about-clients__item:hover,
.page-about .about-clients__item:focus-within {
  background: var(--moss);
}

.page-about .about-clients__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
  color: var(--coral);
}

.page-about .about-clients__title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: var(--bone);
}

.page-about .about-clients__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
}

.page-about .about-clients__tags {
  margin: auto 0 0;
  padding-top: 12px;
  font-size: var(--fs-14);
  font-style: italic;
  color: var(--stone);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 赛季纵深 ---------- */
.page-about .about-archive__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  margin-top: clamp(22px, 3vw, 36px);
}

@media (min-width: 900px) {
  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-about .about-archive__figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
  border-left: var(--about-rule);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(24px, 3.2vw, 38px) clamp(18px, 2.6vw, 32px);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--about-node) / -2 - 2px);
  top: 0.5em;
  width: var(--about-node);
  height: var(--about-node);
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.16);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

@media (hover: hover) {
  .page-about .about-timeline__item:hover::before {
    transform: scale(1.35);
    box-shadow: 0 0 0 7px rgba(198, 242, 78, 0.2);
  }
}

.page-about .about-timeline__era {
  margin: 0 0 0.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.1em;
  color: var(--mute);
}

.page-about .about-timeline__title {
  margin: 0 0 0.55em;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mute);
  max-width: 36em;
}

.page-about .about-timeline__note {
  margin: 0.85em 0 0;
  padding-left: 0.9em;
  border-left: 2px solid var(--line);
  font-size: var(--fs-14);
  font-style: italic;
  line-height: 1.7;
  color: var(--stone);
  transition: border-color 0.26s var(--ease), color 0.26s var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__note,
.page-about .about-timeline__item:focus-within .about-timeline__note {
  border-color: var(--coral);
  color: var(--mute);
}

/* ---------- 生产流程 ---------- */
.page-about .about-pipeline__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
}

@media (min-width: 900px) {
  .page-about .about-pipeline__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

.page-about .about-pipeline__figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-steps__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: clamp(14px, 2vw, 20px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-steps__no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--coral);
  padding-top: 0.35em;
}

.page-about .about-steps__title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: var(--bone);
}

.page-about .about-steps__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 场馆档案 ---------- */
.page-about .about-venues__grid {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(22px, 3vw, 36px);
}

@media (min-width: 620px) {
  .page-about .about-venues__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-venues__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-venues__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(31, 61, 51, 0.6), rgba(12, 31, 26, 0.25));
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.page-about .about-venues__card:hover,
.page-about .about-venues__card:focus-within {
  border-color: var(--clay);
  transform: translateY(-3px);
}

.page-about .about-venues__title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-about .about-venues__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 52px);
  margin-top: clamp(22px, 3vw, 36px);
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

.page-about .about-team__board {
  padding: clamp(18px, 2.4vw, 30px);
  border-radius: var(--radius);
  color: var(--ink);
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  padding: clamp(12px, 1.6vw, 18px) 0;
  border-bottom: 1px solid rgba(12, 31, 26, 0.16);
  align-items: baseline;
}

.page-about .about-team__row:first-child {
  padding-top: 0;
}

.page-about .about-team__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-team__key {
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-team__val {
  font-family: var(--font-mono);
  font-size: var(--fs-44);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  border-bottom: 3px solid var(--coral);
}

.page-about .about-team__note {
  grid-column: 1 / -1;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: rgba(12, 31, 26, 0.7);
}

.page-about .about-team__copy p {
  margin: 0 0 1.15em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mute);
  max-width: 36em;
}

.page-about .about-team__copy p:last-child {
  margin-bottom: 0;
}

/* ---------- 覆盖版图 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
  margin-top: clamp(22px, 3vw, 36px);
}

@media (min-width: 960px) {
  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .about-coverage__map {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-region {
  border-top: 1px solid var(--line);
}

.page-about .about-region:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-region__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: clamp(12px, 1.8vw, 18px) 2px;
  cursor: pointer;
  list-style: none;
  transition: background 0.22s var(--ease);
}

.page-about .about-region__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-region__summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-region[open] .about-region__summary::before {
  content: "\2212";
}

.page-about .about-region__summary:hover,
.page-about .about-region__summary:focus-visible {
  background: var(--glass);
  outline: none;
}

.page-about .about-region__name {
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--bone);
}

.page-about .about-region__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-about .about-region__body {
  margin: 0;
  padding: 0 2px clamp(14px, 2vw, 20px) 2.1em;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--mute);
  max-width: 40em;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(22px, 3vw, 36px);
}

@media (min-width: 680px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-partners__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(8px);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease);
}

.page-about .about-partners__card:hover,
.page-about .about-partners__card:focus-within {
  border-color: var(--lime);
  background: var(--glass-strong);
}

.page-about .about-partners__title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: var(--bone);
}

.page-about .about-partners__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
}

.page-about .about-partners__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--stone);
}

.page-about .about-partners__note {
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding-left: 1em;
  border-left: 2px solid var(--clay);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
  max-width: 62em;
}

/* ---------- 收束引导 ---------- */
.page-about .about-next__band {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 60px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(198, 242, 78, 0.14), rgba(31, 61, 51, 0.62) 52%, rgba(12, 31, 26, 0.92));
}

.page-about .about-next__band::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -30%;
  width: clamp(180px, 34vw, 420px);
  height: clamp(180px, 34vw, 420px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 74, 0.24), transparent 68%);
  pointer-events: none;
}

.page-about .about-next__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-next__links {
  position: relative;
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mute);
}

.page-about .about-next__links a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 78, 0.5);
  transition: border-color 0.22s var(--ease);
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  border-color: var(--lime);
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-clients__item,
  .page-about .about-venues__card,
  .page-about .about-partners__card,
  .page-about .about-timeline__item::before,
  .page-about .about-timeline__note,
  .page-about .about-routes__link {
    transition: none;
  }
  .page-about .about-venues__card:hover,
  .page-about .about-venues__card:focus-within {
    transform: none;
  }
}